| Message ID | 20220221040717.3729-3-leilk.liu@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | spi: mediatek: add single/quad mode support | expand |
Il 21/02/22 05:07, Leilk Liu ha scritto: > this patch add the support of IPM single mode design. > > Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> > --- > drivers/spi/spi-mt65xx.c | 103 +++++++++++++++++++++++++++++++++------ > 1 file changed, 87 insertions(+), 16 deletions(-) > > diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c > index bbfeb8046c17..5fa677a589a4 100644 > --- a/drivers/spi/spi-mt65xx.c > +++ b/drivers/spi/spi-mt65xx.c > @@ -31,6 +31,7 @@ > #define SPI_CFG2_REG 0x0028 > #define SPI_TX_SRC_REG_64 0x002c > #define SPI_RX_DST_REG_64 0x0030 > +#define SPI_CFG3_IPM_REG 0x0040 > > #define SPI_CFG0_SCK_HIGH_OFFSET 0 > #define SPI_CFG0_SCK_LOW_OFFSET 8 > @@ -48,6 +49,7 @@ > #define SPI_CFG1_CS_IDLE_MASK 0xff > #define SPI_CFG1_PACKET_LOOP_MASK 0xff00 > #define SPI_CFG1_PACKET_LENGTH_MASK 0x3ff0000 > +#define SPI_CFG1_IPM_PACKET_LENGTH_MASK GENMASK(31, 16) > #define SPI_CFG2_SCK_HIGH_OFFSET 0 > #define SPI_CFG2_SCK_LOW_OFFSET 16 > > @@ -68,7 +70,13 @@ > #define SPI_CMD_TX_ENDIAN BIT(15) > #define SPI_CMD_FINISH_IE BIT(16) > #define SPI_CMD_PAUSE_IE BIT(17) > +#define SPI_CMD_IPM_NONIDLE_MODE BIT(19) > +#define SPI_CMD_IPM_SPIM_LOOP BIT(21) > +#define SPI_CMD_IPM_GET_TICKDLY_OFFSET 22 > > +#define SPI_CMD_IPM_GET_TICKDLY_MASK GENMASK(24, 22) > +#define SPI_CFG3_IPM_HALF_DUPLEX_DIR BIT(2) > +#define SPI_CFG3_IPM_HALF_DUPLEX_EN BIT(3) > #define MT8173_SPI_MAX_PAD_SEL 3 > > #define MTK_SPI_PAUSE_INT_STATUS 0x2 > @@ -78,6 +86,7 @@ > > #define MTK_SPI_MAX_FIFO_SIZE 32U > #define MTK_SPI_PACKET_SIZE 1024 > +#define MTK_SPI_IPM_PACKET_SIZE SZ_64K > #define MTK_SPI_32BITS_MASK (0xffffffff) > > #define DMA_ADDR_EXT_BITS (36) > @@ -93,6 +102,9 @@ struct mtk_spi_compatible { > bool dma_ext; > /* some IC no need unprepare SPI clk */ > bool no_need_unprepare; > + /* IPM design improve some single mode features */ > + bool ipm_design; > + > }; > > struct mtk_spi { > @@ -116,6 +128,12 @@ static const struct mtk_spi_compatible mt2712_compat = { > .must_tx = true, > }; > > +static const struct mtk_spi_compatible ipm_compat_single = { > + .enhance_timing = true, > + .dma_ext = true, > + .ipm_design = true, > +}; > + > static const struct mtk_spi_compatible mt6765_compat = { > .need_pad_sel = true, > .must_tx = true, > @@ -157,6 +175,9 @@ static const struct mtk_chip_config mtk_default_chip_info = { > }; > > static const struct of_device_id mtk_spi_of_match[] = { > + { .compatible = "mediatek,ipm-spi-single", > + .data = (void *)&ipm_compat_single, > + }, > { .compatible = "mediatek,mt2701-spi", > .data = (void *)&mtk_common_compat, > }, > @@ -275,12 +296,11 @@ static int mtk_spi_set_hw_cs_timing(struct spi_device *spi) > return 0; > } > > -static int mtk_spi_prepare_message(struct spi_master *master, > - struct spi_message *msg) > +static int mtk_spi_hw_init(struct spi_master *master, > + struct spi_device *spi) > { > u16 cpha, cpol; > u32 reg_val; > - struct spi_device *spi = msg->spi; > struct mtk_chip_config *chip_config = spi->controller_data; > struct mtk_spi *mdata = spi_master_get_devdata(master); > > @@ -288,6 +308,15 @@ static int mtk_spi_prepare_message(struct spi_master *master, > cpol = spi->mode & SPI_CPOL ? 1 : 0; > > reg_val = readl(mdata->base + SPI_CMD_REG); > + if (mdata->dev_comp->ipm_design) { > + /* SPI transfer without idle time until packet length done */ > + reg_val |= SPI_CMD_IPM_NONIDLE_MODE; > + if (spi->mode & SPI_LOOP) > + reg_val |= SPI_CMD_IPM_SPIM_LOOP; > + else > + reg_val &= ~SPI_CMD_IPM_SPIM_LOOP; > + } > + > if (cpha) > reg_val |= SPI_CMD_CPHA; > else > @@ -344,18 +373,33 @@ static int mtk_spi_prepare_message(struct spi_master *master, > writel(mdata->pad_sel[spi->chip_select], > mdata->base + SPI_PAD_SEL_REG); > > - /* tick delay */ > - reg_val = readl(mdata->base + SPI_CFG1_REG); > - reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; > - reg_val |= ((chip_config->tick_delay & 0x7) > - << SPI_CFG1_GET_TICK_DLY_OFFSET); > - writel(reg_val, mdata->base + SPI_CFG1_REG); Hello Leilk, with this change, you are excluding this code from MT2712: is that intentional? If it is, then this should reside in a different commit with a Fixes tag, also explaining the reason for not setting the tick delay on that SoC. Also, please don't remove the /* tick delay */ comment. Regards, Angelo > + if (mdata->dev_comp->enhance_timing) { > + if (mdata->dev_comp->ipm_design) { > + reg_val = readl(mdata->base + SPI_CMD_REG); > + reg_val &= ~SPI_CMD_IPM_GET_TICKDLY_MASK; > + reg_val |= ((chip_config->tick_delay & 0x7) > + << SPI_CMD_IPM_GET_TICKDLY_OFFSET); > + writel(reg_val, mdata->base + SPI_CMD_REG); > + } else { > + reg_val = readl(mdata->base + SPI_CFG1_REG); > + reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; > + reg_val |= ((chip_config->tick_delay & 0x7) > + << SPI_CFG1_GET_TICK_DLY_OFFSET); > + writel(reg_val, mdata->base + SPI_CFG1_REG); > + } > + } > > /* set hw cs timing */ > mtk_spi_set_hw_cs_timing(spi); > return 0; > }
On Tue, 2022-02-22 at 11:09 +0100, AngeloGioacchino Del Regno wrote: > Il 21/02/22 05:07, Leilk Liu ha scritto: > > this patch add the support of IPM single mode design. > > > > Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> > > --- > > drivers/spi/spi-mt65xx.c | 103 +++++++++++++++++++++++++++++++++- > > ----- > > 1 file changed, 87 insertions(+), 16 deletions(-) > > > > diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c > > index bbfeb8046c17..5fa677a589a4 100644 > > --- a/drivers/spi/spi-mt65xx.c > > +++ b/drivers/spi/spi-mt65xx.c > > @@ -31,6 +31,7 @@ > > #define SPI_CFG2_REG 0x0028 > > #define SPI_TX_SRC_REG_64 0x002c > > #define SPI_RX_DST_REG_64 0x0030 > > +#define SPI_CFG3_IPM_REG 0x0040 > > > > #define SPI_CFG0_SCK_HIGH_OFFSET 0 > > #define SPI_CFG0_SCK_LOW_OFFSET 8 > > @@ -48,6 +49,7 @@ > > #define SPI_CFG1_CS_IDLE_MASK 0xff > > #define SPI_CFG1_PACKET_LOOP_MASK 0xff00 > > #define SPI_CFG1_PACKET_LENGTH_MASK 0x3ff0000 > > +#define SPI_CFG1_IPM_PACKET_LENGTH_MASK GENMASK(31, 16) > > #define SPI_CFG2_SCK_HIGH_OFFSET 0 > > #define SPI_CFG2_SCK_LOW_OFFSET 16 > > > > @@ -68,7 +70,13 @@ > > #define SPI_CMD_TX_ENDIAN BIT(15) > > #define SPI_CMD_FINISH_IE BIT(16) > > #define SPI_CMD_PAUSE_IE BIT(17) > > +#define SPI_CMD_IPM_NONIDLE_MODE BIT(19) > > +#define SPI_CMD_IPM_SPIM_LOOP BIT(21) > > +#define SPI_CMD_IPM_GET_TICKDLY_OFFSET 22 > > > > +#define SPI_CMD_IPM_GET_TICKDLY_MASK GENMASK(24, 22) > > +#define SPI_CFG3_IPM_HALF_DUPLEX_DIR BIT(2) > > +#define SPI_CFG3_IPM_HALF_DUPLEX_EN BIT(3) > > #define MT8173_SPI_MAX_PAD_SEL 3 > > > > #define MTK_SPI_PAUSE_INT_STATUS 0x2 > > @@ -78,6 +86,7 @@ > > > > #define MTK_SPI_MAX_FIFO_SIZE 32U > > #define MTK_SPI_PACKET_SIZE 1024 > > +#define MTK_SPI_IPM_PACKET_SIZE SZ_64K > > #define MTK_SPI_32BITS_MASK (0xffffffff) > > > > #define DMA_ADDR_EXT_BITS (36) > > @@ -93,6 +102,9 @@ struct mtk_spi_compatible { > > bool dma_ext; > > /* some IC no need unprepare SPI clk */ > > bool no_need_unprepare; > > + /* IPM design improve some single mode features */ > > + bool ipm_design; > > + > > }; > > > > struct mtk_spi { > > @@ -116,6 +128,12 @@ static const struct mtk_spi_compatible > > mt2712_compat = { > > .must_tx = true, > > }; > > > > +static const struct mtk_spi_compatible ipm_compat_single = { > > + .enhance_timing = true, > > + .dma_ext = true, > > + .ipm_design = true, > > +}; > > + > > static const struct mtk_spi_compatible mt6765_compat = { > > .need_pad_sel = true, > > .must_tx = true, > > @@ -157,6 +175,9 @@ static const struct mtk_chip_config > > mtk_default_chip_info = { > > }; > > > > static const struct of_device_id mtk_spi_of_match[] = { > > + { .compatible = "mediatek,ipm-spi-single", > > + .data = (void *)&ipm_compat_single, > > + }, > > { .compatible = "mediatek,mt2701-spi", > > .data = (void *)&mtk_common_compat, > > }, > > @@ -275,12 +296,11 @@ static int mtk_spi_set_hw_cs_timing(struct > > spi_device *spi) > > return 0; > > } > > > > -static int mtk_spi_prepare_message(struct spi_master *master, > > - struct spi_message *msg) > > +static int mtk_spi_hw_init(struct spi_master *master, > > + struct spi_device *spi) > > { > > u16 cpha, cpol; > > u32 reg_val; > > - struct spi_device *spi = msg->spi; > > struct mtk_chip_config *chip_config = spi->controller_data; > > struct mtk_spi *mdata = spi_master_get_devdata(master); > > > > @@ -288,6 +308,15 @@ static int mtk_spi_prepare_message(struct > > spi_master *master, > > cpol = spi->mode & SPI_CPOL ? 1 : 0; > > > > reg_val = readl(mdata->base + SPI_CMD_REG); > > + if (mdata->dev_comp->ipm_design) { > > + /* SPI transfer without idle time until packet length > > done */ > > + reg_val |= SPI_CMD_IPM_NONIDLE_MODE; > > + if (spi->mode & SPI_LOOP) > > + reg_val |= SPI_CMD_IPM_SPIM_LOOP; > > + else > > + reg_val &= ~SPI_CMD_IPM_SPIM_LOOP; > > + } > > + > > if (cpha) > > reg_val |= SPI_CMD_CPHA; > > else > > @@ -344,18 +373,33 @@ static int mtk_spi_prepare_message(struct > > spi_master *master, > > writel(mdata->pad_sel[spi->chip_select], > > mdata->base + SPI_PAD_SEL_REG); > > > > - /* tick delay */ > > - reg_val = readl(mdata->base + SPI_CFG1_REG); > > - reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; > > - reg_val |= ((chip_config->tick_delay & 0x7) > > - << SPI_CFG1_GET_TICK_DLY_OFFSET); > > - writel(reg_val, mdata->base + SPI_CFG1_REG); > > Hello Leilk, > > with this change, you are excluding this code from MT2712: is that > intentional? > If it is, then this should reside in a different commit with a Fixes > tag, also explaining the reason for not setting the tick delay on > that SoC. It's different for MT2712 and the other ICs for tick delay. I'll send a patch with fixes tag, thanks > > Also, please don't remove the /* tick delay */ comment. > OK, I'll fix it,thanks > Regards, > Angelo > > > + if (mdata->dev_comp->enhance_timing) { > > + if (mdata->dev_comp->ipm_design) { > > + reg_val = readl(mdata->base + SPI_CMD_REG); > > + reg_val &= ~SPI_CMD_IPM_GET_TICKDLY_MASK; > > + reg_val |= ((chip_config->tick_delay & 0x7) > > + << SPI_CMD_IPM_GET_TICKDLY_OFFSET); > > + writel(reg_val, mdata->base + SPI_CMD_REG); > > + } else { > > + reg_val = readl(mdata->base + SPI_CFG1_REG); > > + reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; > > + reg_val |= ((chip_config->tick_delay & 0x7) > > + << SPI_CFG1_GET_TICK_DLY_OFFSET); > > + writel(reg_val, mdata->base + SPI_CFG1_REG); > > + } > > + } > > > > /* set hw cs timing */ > > mtk_spi_set_hw_cs_timing(spi); > > return 0; > > } > >
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index bbfeb8046c17..5fa677a589a4 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -31,6 +31,7 @@ #define SPI_CFG2_REG 0x0028 #define SPI_TX_SRC_REG_64 0x002c #define SPI_RX_DST_REG_64 0x0030 +#define SPI_CFG3_IPM_REG 0x0040 #define SPI_CFG0_SCK_HIGH_OFFSET 0 #define SPI_CFG0_SCK_LOW_OFFSET 8 @@ -48,6 +49,7 @@ #define SPI_CFG1_CS_IDLE_MASK 0xff #define SPI_CFG1_PACKET_LOOP_MASK 0xff00 #define SPI_CFG1_PACKET_LENGTH_MASK 0x3ff0000 +#define SPI_CFG1_IPM_PACKET_LENGTH_MASK GENMASK(31, 16) #define SPI_CFG2_SCK_HIGH_OFFSET 0 #define SPI_CFG2_SCK_LOW_OFFSET 16 @@ -68,7 +70,13 @@ #define SPI_CMD_TX_ENDIAN BIT(15) #define SPI_CMD_FINISH_IE BIT(16) #define SPI_CMD_PAUSE_IE BIT(17) +#define SPI_CMD_IPM_NONIDLE_MODE BIT(19) +#define SPI_CMD_IPM_SPIM_LOOP BIT(21) +#define SPI_CMD_IPM_GET_TICKDLY_OFFSET 22 +#define SPI_CMD_IPM_GET_TICKDLY_MASK GENMASK(24, 22) +#define SPI_CFG3_IPM_HALF_DUPLEX_DIR BIT(2) +#define SPI_CFG3_IPM_HALF_DUPLEX_EN BIT(3) #define MT8173_SPI_MAX_PAD_SEL 3 #define MTK_SPI_PAUSE_INT_STATUS 0x2 @@ -78,6 +86,7 @@ #define MTK_SPI_MAX_FIFO_SIZE 32U #define MTK_SPI_PACKET_SIZE 1024 +#define MTK_SPI_IPM_PACKET_SIZE SZ_64K #define MTK_SPI_32BITS_MASK (0xffffffff) #define DMA_ADDR_EXT_BITS (36) @@ -93,6 +102,9 @@ struct mtk_spi_compatible { bool dma_ext; /* some IC no need unprepare SPI clk */ bool no_need_unprepare; + /* IPM design improve some single mode features */ + bool ipm_design; + }; struct mtk_spi { @@ -116,6 +128,12 @@ static const struct mtk_spi_compatible mt2712_compat = { .must_tx = true, }; +static const struct mtk_spi_compatible ipm_compat_single = { + .enhance_timing = true, + .dma_ext = true, + .ipm_design = true, +}; + static const struct mtk_spi_compatible mt6765_compat = { .need_pad_sel = true, .must_tx = true, @@ -157,6 +175,9 @@ static const struct mtk_chip_config mtk_default_chip_info = { }; static const struct of_device_id mtk_spi_of_match[] = { + { .compatible = "mediatek,ipm-spi-single", + .data = (void *)&ipm_compat_single, + }, { .compatible = "mediatek,mt2701-spi", .data = (void *)&mtk_common_compat, }, @@ -275,12 +296,11 @@ static int mtk_spi_set_hw_cs_timing(struct spi_device *spi) return 0; } -static int mtk_spi_prepare_message(struct spi_master *master, - struct spi_message *msg) +static int mtk_spi_hw_init(struct spi_master *master, + struct spi_device *spi) { u16 cpha, cpol; u32 reg_val; - struct spi_device *spi = msg->spi; struct mtk_chip_config *chip_config = spi->controller_data; struct mtk_spi *mdata = spi_master_get_devdata(master); @@ -288,6 +308,15 @@ static int mtk_spi_prepare_message(struct spi_master *master, cpol = spi->mode & SPI_CPOL ? 1 : 0; reg_val = readl(mdata->base + SPI_CMD_REG); + if (mdata->dev_comp->ipm_design) { + /* SPI transfer without idle time until packet length done */ + reg_val |= SPI_CMD_IPM_NONIDLE_MODE; + if (spi->mode & SPI_LOOP) + reg_val |= SPI_CMD_IPM_SPIM_LOOP; + else + reg_val &= ~SPI_CMD_IPM_SPIM_LOOP; + } + if (cpha) reg_val |= SPI_CMD_CPHA; else @@ -344,18 +373,33 @@ static int mtk_spi_prepare_message(struct spi_master *master, writel(mdata->pad_sel[spi->chip_select], mdata->base + SPI_PAD_SEL_REG); - /* tick delay */ - reg_val = readl(mdata->base + SPI_CFG1_REG); - reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; - reg_val |= ((chip_config->tick_delay & 0x7) - << SPI_CFG1_GET_TICK_DLY_OFFSET); - writel(reg_val, mdata->base + SPI_CFG1_REG); + if (mdata->dev_comp->enhance_timing) { + if (mdata->dev_comp->ipm_design) { + reg_val = readl(mdata->base + SPI_CMD_REG); + reg_val &= ~SPI_CMD_IPM_GET_TICKDLY_MASK; + reg_val |= ((chip_config->tick_delay & 0x7) + << SPI_CMD_IPM_GET_TICKDLY_OFFSET); + writel(reg_val, mdata->base + SPI_CMD_REG); + } else { + reg_val = readl(mdata->base + SPI_CFG1_REG); + reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; + reg_val |= ((chip_config->tick_delay & 0x7) + << SPI_CFG1_GET_TICK_DLY_OFFSET); + writel(reg_val, mdata->base + SPI_CFG1_REG); + } + } /* set hw cs timing */ mtk_spi_set_hw_cs_timing(spi); return 0; } +static int mtk_spi_prepare_message(struct spi_master *master, + struct spi_message *msg) +{ + return mtk_spi_hw_init(master, msg->spi); +} + static void mtk_spi_set_cs(struct spi_device *spi, bool enable) { u32 reg_val; @@ -377,13 +421,13 @@ static void mtk_spi_set_cs(struct spi_device *spi, bool enable) } static void mtk_spi_prepare_transfer(struct spi_master *master, - struct spi_transfer *xfer) + u32 speed_hz) { u32 div, sck_time, reg_val; struct mtk_spi *mdata = spi_master_get_devdata(master); - if (xfer->speed_hz < mdata->spi_clk_hz / 2) - div = DIV_ROUND_UP(mdata->spi_clk_hz, xfer->speed_hz); + if (speed_hz < mdata->spi_clk_hz / 2) + div = DIV_ROUND_UP(mdata->spi_clk_hz, speed_hz); else div = 1; @@ -414,12 +458,24 @@ static void mtk_spi_setup_packet(struct spi_master *master) u32 packet_size, packet_loop, reg_val; struct mtk_spi *mdata = spi_master_get_devdata(master); - packet_size = min_t(u32, mdata->xfer_len, MTK_SPI_PACKET_SIZE); + if (mdata->dev_comp->ipm_design) + packet_size = min_t(u32, + mdata->xfer_len, + MTK_SPI_IPM_PACKET_SIZE); + else + packet_size = min_t(u32, + mdata->xfer_len, + MTK_SPI_PACKET_SIZE); + packet_loop = mdata->xfer_len / packet_size; reg_val = readl(mdata->base + SPI_CFG1_REG); - reg_val &= ~(SPI_CFG1_PACKET_LENGTH_MASK | SPI_CFG1_PACKET_LOOP_MASK); + if (mdata->dev_comp->ipm_design) + reg_val &= ~SPI_CFG1_IPM_PACKET_LENGTH_MASK; + else + reg_val &= ~SPI_CFG1_PACKET_LENGTH_MASK; reg_val |= (packet_size - 1) << SPI_CFG1_PACKET_LENGTH_OFFSET; + reg_val &= ~SPI_CFG1_PACKET_LOOP_MASK; reg_val |= (packet_loop - 1) << SPI_CFG1_PACKET_LOOP_OFFSET; writel(reg_val, mdata->base + SPI_CFG1_REG); } @@ -514,7 +570,7 @@ static int mtk_spi_fifo_transfer(struct spi_master *master, mdata->cur_transfer = xfer; mdata->xfer_len = min(MTK_SPI_MAX_FIFO_SIZE, xfer->len); mdata->num_xfered = 0; - mtk_spi_prepare_transfer(master, xfer); + mtk_spi_prepare_transfer(master, xfer->speed_hz); mtk_spi_setup_packet(master); if (xfer->tx_buf) { @@ -547,7 +603,7 @@ static int mtk_spi_dma_transfer(struct spi_master *master, mdata->cur_transfer = xfer; mdata->num_xfered = 0; - mtk_spi_prepare_transfer(master, xfer); + mtk_spi_prepare_transfer(master, xfer->speed_hz); cmd = readl(mdata->base + SPI_CMD_REG); if (xfer->tx_buf) @@ -582,6 +638,19 @@ static int mtk_spi_transfer_one(struct spi_master *master, struct spi_device *spi, struct spi_transfer *xfer) { + struct mtk_spi *mdata = spi_master_get_devdata(spi->master); + u32 reg_val = 0; + + /* prepare xfer direction and duplex mode */ + if (mdata->dev_comp->ipm_design) { + if (!xfer->tx_buf || !xfer->rx_buf) { + reg_val |= SPI_CFG3_IPM_HALF_DUPLEX_EN; + if (xfer->rx_buf) + reg_val |= SPI_CFG3_IPM_HALF_DUPLEX_DIR; + } + writel(reg_val, mdata->base + SPI_CFG3_IPM_REG); + } + if (master->can_dma(master, spi, xfer)) return mtk_spi_dma_transfer(master, spi, xfer); else @@ -748,6 +817,8 @@ static int mtk_spi_probe(struct platform_device *pdev) if (mdata->dev_comp->must_tx) master->flags = SPI_MASTER_MUST_TX; + if (mdata->dev_comp->ipm_design) + master->mode_bits |= SPI_LOOP; if (mdata->dev_comp->need_pad_sel) { mdata->pad_num = of_property_count_u32_elems(
this patch add the support of IPM single mode design. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> --- drivers/spi/spi-mt65xx.c | 103 +++++++++++++++++++++++++++++++++------ 1 file changed, 87 insertions(+), 16 deletions(-)